[1]王吴光*,张自强.doi: 10.3969/j.issn.1001-3849.2025.07.004脉冲电流对Ni-W-SiC纳米镀层组织和耐磨性能的影响[J].电镀与精饰,2025,(07):23-28.
　Wang Wuguang*,Zhang Ziqiang.Effect of pulse current on the structures and wear resistances of Ni-W-SiC nanocoatings[J].Plating & Finishing,2025,(07):23-28.
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doi: 10.3969/j.issn.1001-3849.2025.07.004脉冲电流对Ni-W-SiC纳米镀层组织和耐磨性能的影响()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年07
页码:
23-28
栏目:
出版日期:
2025-07-31

文章信息/Info

Title:
Effect of pulse current on the structures and wear resistances of Ni-W-SiC nanocoatings
作者:
王吴光1*; 张自强2
(1. 无锡城市职业技术学院,江苏 无锡 214000; 2. 东北石油大学 机械科学与工程学院,黑龙江 大庆 163319)
Author(s):
Wang Wuguang1*;  Zhang Ziqiang2
(1. Wuxi City College of Vocational Technology, Wuxi 214000, China; 2. School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163319, China)
关键词:
脉冲电流; Ni-W-SiC纳米镀层; 表面形貌; 显微硬度; 耐磨性能
Keywords:
pulse current;  Ni-W-SiC nanocoating;  surface morphology;  microhardness;  wear resistance
分类号:
TQ153
文献标志码:
A
摘要:
本文采用脉冲电沉积技术，在304不锈钢表面制得Ni-W-SiC纳米镀层，并研究脉冲电流密度对Ni-W-SiC纳米镀层的组织和耐磨性能的影响。利用扫描透射电镜(SEM)、能谱仪(EDS)和原子力显微镜(AFM)观察了Ni-W-SiC纳米镀层的表面形貌、表面粗糙度及其元素组成；采用X射线衍射仪(XRD)分析了镀层的晶相结构，并运用显微硬度计和摩擦磨损试验机对镀层的显微硬度和摩擦性能进行研究。结果表明，当电流密度分别为3、5和7 A/dm2时，Ni-W-SiC纳米镀层的Ni-W晶粒分别为109.7、78.1和89.9 nm，说明脉冲电流密度大小对镀层的晶粒尺寸产生很大影响。当脉冲电流密度为5 A/dm2时，Ni-W-SiC纳米镀层的孔隙率、粗糙度、晶粒尺寸、磨损量、摩擦系数最小，且镀层的表面平整度最好。此时，Ni-W-SiC纳米镀层的显微硬度为556.4 HV，磨损失重为2.8 mg。此外，当电流密度为5 A/dm2时，该纳米镀层的磨痕又窄又浅，耐磨损性能更好。
Abstract:
Ni-W-SiC nanocoatings were prepared on the surface of 304 stainless steel by pulse electrodeposition technology, and the effects of different pulse current densities on the microstructures and wear resistances of the coatings were analyzed.Scanning transmission electron microscopy (SEM), energy dispersive spectroscopy (EDS), and atomic force microscopy (AFM) were used to measure the surface morphology, surface roughness, and elemental composition of Ni-W-SiC nanocoatings. Furthermore, X-ray diffraction (XRD) was used to analyze the crystal phase structure, and the microhardness and friction properties of the coatings were studied by using a microhardness tester and a friction and wear tester. The results showed that When the current density was 3, 5, and 5 A/dm2, the Ni-W grains in Ni-W-SiC nanocoatings were 109.7, 78.1, and 89.9 nm, respectively. It indicated that the pulse current density had a great impact on the grain sizes of coatings.The Ni-W-SiC nanocoating prepared at 5 A/dm2 had narrow and shallow scratches, the wear resistance was outstanding, the porosity, the roughness, grain size, wear amount and friction coefficient were the smallest among all coatings, the microhardness of the coating was 556.4 HV, and its wear loss was only 2.8 mg.. Besides, the surface smoothness of the coating was the best.

参考文献/References:

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更新日期/Last Update: 2025-07-08